{"id":28745,"date":"2015-09-18T15:06:28","date_gmt":"2015-09-18T20:06:28","guid":{"rendered":"http:\/\/www.freeautomechanic.com\/mechanic\/forum\/?p=28745"},"modified":"2020-02-21T08:08:43","modified_gmt":"2020-02-21T16:08:43","slug":"chevy-trailblazer","status":"publish","type":"post","link":"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/2015\/09\/chevy-trailblazer","title":{"rendered":"Chevy trailblazer P0300"},"content":{"rendered":"

\"Chevy<\/p>\n

Read obd reader P0300<\/a> changed out 6 spark plugs to brand new found one coil that looked corroded, unplugged that coil to see if engine ran worse. No change in sound so I figured this cylinder is definitely the problem, changed that coil cleaned throttle body. Still getting same issue changed fuel filter fuel pressure is good. I feel I’ve isolated the problem to cylinder 4 which had corrosion but now am wondering what it could be<\/p>\n

\n
\n

Could be a bad fuel injector. Try swapping it with a different cylinder and see if the problem follows the injector.
\n\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014-
\nP0300 Chevrolet \u2013 Cylinder Misfire Detected Random Cylinders<\/p>\n

Possible causes
\n\u2013 Faulty spark plug (s)
\n\u2013 Faulty ignition coil (s)
\n\u2013 Clogged or faulty fuel injector (s)
\n\u2013 Intake air leak
\n\u2013 Fuel injectors harness is open or shorted
\n\u2013 Fuel Injectors circuit poor electrical connection
\n\u2013 Ignition coils harness is open or shorted
\n\u2013 Ignition coils circuit poor electrical connection
\n\u2013 Insufficient cylinders compression
\n\u2013 Incorrect fuel pressure<\/p>\n","protected":false},"excerpt":{"rendered":"

Read obd reader P0300 changed out 6 spark plugs to brand new found one coil that looked corroded, unplugged that coil to see if engine ran worse. No change in sound so I figured this cylinder is definitely the problem, changed that coil cleaned throttle body. Still getting same issue changed fuel filter fuel pressure… Read More »Chevy trailblazer P0300<\/span><\/a><\/p>\n","protected":false},"author":12032,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"neve_meta_sidebar":"","neve_meta_container":"","neve_meta_enable_content_width":"","neve_meta_content_width":0,"neve_meta_title_alignment":"","neve_meta_author_avatar":"","neve_post_elements_order":"","neve_meta_disable_header":"","neve_meta_disable_footer":"","neve_meta_disable_title":"","footnotes":""},"categories":[3],"tags":[10123],"class_list":["post-28745","post","type-post","status-publish","format-standard","hentry","category-chevy","tag-trailblazer"],"yoast_head":"\nChevy trailblazer P0300 - FreeAutoMechanic Advice<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/2015\/09\/chevy-trailblazer\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Chevy trailblazer P0300\" \/>\n<meta property=\"og:description\" content=\"Read obd reader P0300 changed out 6 spark plugs to brand new found one coil that looked corroded, unplugged that coil to see if engine ran worse. No change in sound so I figured this cylinder is definitely the problem, changed that coil cleaned throttle body. Still getting same issue changed fuel filter fuel pressure… Read More »Chevy trailblazer P0300\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/2015\/09\/chevy-trailblazer\" \/>\n<meta property=\"og:site_name\" content=\"FreeAutoMechanic Advice\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/freeautomechanic\" \/>\n<meta property=\"article:published_time\" content=\"2015-09-18T20:06:28+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2020-02-21T16:08:43+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/wp-content\/uploads\/2016\/07\/2002-chevy-trailblazer.jpg\" \/>\n<meta name=\"author\" content=\"Richard McLaughlin\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Richard McLaughlin\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"Chevy trailblazer P0300 - FreeAutoMechanic Advice","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.freeautomechanic.com\/mechanic\/forum\/2015\/09\/chevy-trailblazer","og_locale":"en_US","og_type":"article","og_title":"Chevy trailblazer P0300","og_description":"Read obd reader P0300 changed out 6 spark plugs to brand new found one coil that looked corroded, unplugged that coil to see if engine ran worse. 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